Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for processing pivoting support ring rail of mining excavator

A technology of slewing bearing and processing method, applied in the field of machining, can solve the problem that the mechanical properties and service performance of the ring rail cannot meet the production and use, and achieve the effects of saving raw materials, low production cost, machining allowance and uniformity

Inactive Publication Date: 2011-02-16
无锡得戟重工有限公司
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitation of raw materials, the mechanical properties and service performance of the ring rails cast from existing materials cannot meet the needs of production and use.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for processing pivoting support ring rail of mining excavator
  • Method for processing pivoting support ring rail of mining excavator
  • Method for processing pivoting support ring rail of mining excavator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: as figure 2 As shown, a processing method of the slewing bearing ring rail of a mining excavator, first casts a "convex"-shaped ring rail blank with silicon-manganese steel, and then machine-finishes the ring rail into a finished product; and figure 1 Compared with the processing of the original forgings, the processing allowance of the ring rail is greatly reduced, saving raw materials and reducing the workload of machining. In the figure, 1 is the machining allowance part of the ring rail, and 2 is the finished section of the ring rail. Higher strength grade materials are used to replace the original ring rail materials, and the mechanical properties and service performance are not lower than the original forging material level. The silicon-manganese steel used is made of the following components: carbon 0.18%, silicon 1.5%, manganese 1.5%, 0.5% chromium, 0.01% sulfur, 0.01% phosphorus, and the balance is iron and unavoidable impurities in weight perce...

Embodiment 2～5

[0023] Embodiment 2~5: A kind of processing method of slewing support ring rail of mining excavator, its preparation method is the same as embodiment 1, the difference lies in the content of the component of silicon-manganese steel used is different, the content of each component is shown in the table 2.

[0024] The content of each component in table 2 embodiment 2~5, by weight percentage;

[0025] Example

[0026] silicon%

[0027] The balance is iron and unavoidable impurities.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for processing a pivoting support ring rail of a mining excavator. The method comprises the following steps of: casting a ring rail blank which is shaped like a Chinese character 'Tu' by adopting silico-manganese steel first; and then processing a ring rail finished product through machine finishing, wherein the silico-manganese steel is prepared from the following components in percentage by weight: 0.14 to 0.25 percent of carbon, 0.8 to 2.0 percent of silicon, 0.8 to 2.0 percent of manganese, 0.35 to 1.2 percent of chromium, less than or equal to 0.25 percent of phosphorus, and the balance of iron and inevitable impurities. In the invention, a casting method to replace a forging method, the cross section shape of the cast blank is close to that of the finished product and is shaped like a Chinese character 'Tu' (reserved with machining allowance), and the cast size is easy to control, the machining allowance is small and uniform; and because a material with a higher strength grade is adopted to replace the original ring rail material, the mechanical property and the service performance of the pivoting support ring rail are not lower than the level of the original forged piece material.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and in particular relates to a processing method for a rotary support ring rail of a mining excavator. Background technique [0002] The slewing bearings of large mining excavators generally adopt the structure of conical rollers and raceways, which are disc-shaped raceways, also known as ring rails. The ring rail must have high strength and wear resistance. Due to the large diameter of the entire ring rail, it is made in segments and is composed of multiple arc ring rails. The cross-section of each ring rail is in the shape of "convex", which is made of high-quality alloy steel after forging. Limited by the forging process and precision, the ring rail forging blank with a "mouth"-shaped cross section is first processed, and then finished. The subsequent machining allowance of the ring rail forging blank obtained by this processing method is very large, which will cause a large waste of ra...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C22C38/18E01B23/10C22C38/38C22C38/34
Inventor 江小明覃保成
Owner 无锡得戟重工有限公司